Mat Logbook app icon

BJJ coach grading, offline.

Track students, belts, stripes, and coaching notes in one place.

No account required. Data stays on your device.

Illustration of a young BJJ student tying a yellow belt Illustration of a BJJ student with crossed arms wearing a purple belt

Everything a coach needs

Simple, focused tools for tracking student progress on and off the mat.

Student Profiles

Add students with photo, program, and starting belt and stripes. Keep every record in one place.

Belt & Stripe Updates

Record grading events with belt, stripes, date, and optional notes. View a full grade history timeline.

Private Coaching Notes

Keep private notes for each student. Track observations, goals, and progress between sessions.

Search & Filter

Search by name, filter by BJJ Kids or BJJ Adults, and sort by name or recently updated.

BJJ Adults & Kids

Full support for both BJJ Adults and BJJ Kids belt systems, each with their own grading structure.

Light, Dark, or Auto Theme

Choose the theme that suits you. Light mode, dark mode, or let the app match your device setting.

Why coaches use it

  • Built for real BJJ grading workflows
  • Works fully offline — no internet required
  • No account, no login, no cloud setup
  • Data is stored locally on your device
  • Optional camera/photo permissions for student images only
Mat Logbook student list showing names, belt colors, and programs Mat Logbook student detail with grading history and coaching notes

Privacy-first by design

Your coaching data belongs to you. Mat Logbook is built to keep it that way.

  • No tracking
  • No account required
  • Data stays on your device
  • No location data needed
Read Full Privacy Policy

Keep grading records organized.

Before class, on grading day, and during competition prep.